MDN4083LEA0522NMNANECNCAX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame with factory installed block close PB metal frame padlockable pushbutton cover, 3P, 3PH, 800A, 250A current sensors and rating plugs, 600V, 42kA@600V, 40°C, bolt-on, manually operated, complete with factory installed 110-127Vac UVR, interchangeable Digitrip 220, LI - Long-Time and Instantaneous trip functions, load side lug terminals & latch check switch for external wiring, solid state, low voltage power insulated case circuit breakers